Fault Reaction For Power Loss; Settings; Smooth Start Ramp; Start Enable - ABB ACS355 Supplement Manual

Fault reaction for Power loss

When 20.06 UNDERVOLT CTRL = ENABLE(TIME) and 30.29 = ENABLE (fault ramp
stop enabled) then drive faults after being in under-voltage control for 500ms. Fault
will also trigger an emergency ramp stop.
Related parameters are listed in the table below:


Settings

Parameter
2006 UNDERVOLT CTRL
3029 FAULT RAMP STOP

Smooth start ramp

For PM motor there is possibility for different ramping during the smooth start period.
This function can ensure succesful start of PM motor in case of high inertia and
encoderless operation.
When option "SMOOTH START"(11) of parameter 22.01 "ACC/DEC 1/2 SEL" is
selected, then ramp 2 is used while smooth start is active and ramp 1 when smooth
start is not active.
Related parameters are listed in the table below:

Settings
Parameter
2201 ACC/DEC 1/2 SEL

Start enable

When start enable 1 or 2 is lost while drive is running, then drive will make the stop
set by par. 21.02 STOP FUNCTION.
Related parameters are listed in the table below:

Settings
Parameter
1608 START ENABLE 1
1609 START ENABLE 2
2102 STOP FUNCTION
Additional information
Activates or deactivates the undervoltage control of
the intermediate DC link.
Enables emergency ramp stop when drive faults
Additional information
Source from which the drive reads the signal
that selects between the two ramp pairs.
Additional information
Selects the source for the Start enable 1 signal.
Selects the source for the Start enable 2 signal.
Selects the motor stop function.
Program features 13